Notso Fantastic,
Your comment,
"What is the date of this accident, and what prompts this to be raised at the moment?"
The NW705 accident over Miami, FL occurred on February 12, 1963. This accident proved that a swept wing, aircraft design can pitch-up in a strong updraft. Pilots should be aware of this possibility.
The "Industry" still insists that a swept wing design will always pitch-down in an updraft.